Bolt material for saildrive anode

[Slycat]

Hi all,

I want to change my saildrive anode as the boat is on the mooring, before I do I'd like to buy a few few spare bolts in case I drop one!

Its a Yanmar SD20 split anode, just two simple screws that hold it in. I have the dimensions to buy screws but I am struggling to identify what material these screws are made of.

Can anyone advise? I've emailed a few anode dealers but no responses

Many thanks for any help.

 

[savageseadog]

They are stainless steel, 316 Gradec.

 

[Slycat]

Thank you very much!